Question

Velocity of sound in air is $332m{s}^{-1}$. Its velocity in vacuum will be

• A. $>332m{s}^{-1}$
• B. $=332m{s}^{-1}$
• C. $<332m{s}^{-1}$
• D. None of these

Answer 1

The correct option is D None of these

Sound waves are mechanical waves i.e., they need material medium to propagate. So they will not travel in vacuum at all! Huh!